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Correlation between Near-Field Enhancement and Dephasing Time in Plasmonic Dimers.
Li, Yaolong; Sun, Quan; Zu, Shuai; Shi, Xu; Liu, Yunquan; Hu, Xiaoyong; Ueno, Kosei; Gong, Qihuang; Misawa, Hiroaki.
Afiliación
  • Li Y; State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, and Collaborative Innovation Center of Quantum Matter, Department of Physics, Peking University, Beijing 100871, China.
  • Sun Q; Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan.
  • Zu S; Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan.
  • Shi X; College of Electronic Science & Engineering, Jilin University, Changchun 130012, China.
  • Liu Y; Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan.
  • Hu X; Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan.
  • Ueno K; State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, and Collaborative Innovation Center of Quantum Matter, Department of Physics, Peking University, Beijing 100871, China.
  • Gong Q; Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, China.
  • Misawa H; State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, and Collaborative Innovation Center of Quantum Matter, Department of Physics, Peking University, Beijing 100871, China.
Phys Rev Lett ; 124(16): 163901, 2020 Apr 24.
Article en En | MEDLINE | ID: mdl-32383952
ABSTRACT
Near-field enhancement and dephasing time play critical roles in several applications of localized surface plasmon resonance. Here, using an example gold dimer system, we reveal the correlation between the near-field enhancement and dephasing time via time-resolved photoemission electron microscopy. Compared with isolated particles, dimers with small gap sizes show stronger near-field enhancement and shorter dephasing times. These results are well reproduced by numerical simulations and further explained by a coupled dipole approximation model. The roles of near- and far-field coupling and plasmon localization in balancing near-field enhancement and dephasing time are also unveiled.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2020 Tipo del documento: Article País de afiliación: China
Texto completo
Añadir a Mi BVS
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2020 Tipo del documento: Article País de afiliación: China